A group of 6 or less who are inseparable. Usually unapproachable. Want to spend most if not all of their time together. Usually have many inside jokes that the "outside world" doesn't understand.

Ivy, Jessi, Ruthie, Sheridan, Nate, and David are a clique of six. They repeat their inside jokes over and over and laugh every time. They also have a favorite game in common, which is Dutch Blitz. They all text each other frequently, and attempt to make plans which often fail.

1. noun. A group of persons, typically high school-age, which is seen as hateful and very exclusive by others not in the group. In reality the members of the group are generally nice people, but the secret resentment founded in jealousy of the others causes them to view members as such.
2. adjective derivative: cliquey

1. It's the fault of all the cliques at my school, not of my antisocial disposition, that I have no friends.